166535525 has 24 divisors (see below), whose sum is σ = 232068480. Its totient is φ = 117627840.

The previous prime is 166535507. The next prime is 166535531. The reversal of 166535525 is 525535661.

166535525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166535525 - 2⁸ = 166535269 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3665 + ... + 18614.

It is an arithmetic number, because the mean of its divisors is an integer number (9669520).

Almost surely, 2^166535525 is an apocalyptic number.

It is an amenable number.

166535525 is a deficient number, since it is larger than the sum of its proper divisors (65532955).

166535525 is a wasteful number, since it uses less digits than its factorization.

166535525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22325 (or 22320 counting only the distinct ones).

The product of its digits is 135000, while the sum is 38.

The square root of 166535525 is about 12904.8643929334. The cubic root of 166535525 is about 550.1768301937.

The spelling of 166535525 in words is "one hundred sixty-six million, five hundred thirty-five thousand, five hundred twenty-five".